package api;

import cn.hutool.json.JSONUtil;
import common.ApplicationVariable;
import lombok.SneakyThrows;
import model.ResultData;
import util.DBUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;

/**
 * 修改订单状态
 */
@WebServlet("/uporder")
public class UpdateOrderServlet extends HttpServlet {
    @SneakyThrows
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType(ApplicationVariable.RESPONSE_CONTENT_TYPE);
        int state = -1;
        int data = -1; // 受影响的行数
        String msg = "未知错误！";
        // 1.得到并验证前端的参数
        Integer oid = Integer.parseInt(req.getParameter("oid"));
        Integer s = Integer.parseInt(req.getParameter("state"));
        String priceStr = req.getParameter("price");
        if (oid != null && oid > 0 && s != null) { // 参数有效
            // 2.进行操作
            Connection connection = DBUtil.getConnection();
            String sql = "update `order` set state=? where oid=?";
            PreparedStatement statement = connection.prepareStatement(sql);
            statement.setInt(1, s);
            statement.setInt(2, oid);
            data = statement.executeUpdate();
            state = 200;
            DBUtil.close(null, statement, connection);
        } else {
            msg = "参数错误！";
        }
        // 3.将操作的结果返回给前端
        ResultData resultData = new ResultData();
        resultData.setState(state);
        resultData.setData(data);
        resultData.setMsg(msg);
        resp.getWriter().println(JSONUtil.toJsonStr(resultData));
    }
}
